Stack-head or boot for hot-air stacks.



SCHERER. STACK HEAO OR BOOT FOR HOT Am STAOKS.

PPLICATION FILED JULY 16.

Patented OOt. 5, 1915.

2 SHEETS-SHEET 2.

:OLUMBIA PLANOGRAPH co..w^sHxNcrr0N. D. c.

opening in the wall.

rvr rare.

ALER'I Gr. SCI-IERER, OF CHICAGO, ILLINOIS, SSIGNOR TO THE EXCELSIOR STEEL FURNACE COMPANY2 OF CHICAGO, ILLINOIS, `it vCORPOBAAIIOIT OF ILLINOIS. n

STACKi-I-IEAD OR BOOT FOR`HOT-AIR STACKS.

Specification of Letters Patent.

Patented Oct. 5, 1915.

Application inea July 16,1915. sei-iai no. 40,167.

To all whom t 'may concern Be it known that I, ALBERT G. Setmana, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Stack-Heads or Boots for Hot-Air Stacks, of which the following is a specification.

My invention relates to the construction of hot-air stacks for use in connection with furnaces for heating houses and other buildings. It is well known that these stacks are frequently made of tin Vor sheet metal in a plurality of sections and assembled in the walls of the building vwhen being installed. Suitable lateral openings are made in the walls for the mounting of a register-frame or falce. Frequently in placing the boot or stack-head in position, diiliculty is encountered in inserting the same through this Heretofoie the interlocking members on the boot have been so disposed that the total height of the boot was greater than the height of the opening in the wall, so that the above difficulty was encountered, It is to obviate the objection that l have designed the improved construction in the hot-air boot herein disclosedl It is therefore 'an object of invention to provide' a boot that has its lock-portion adapted to engage and lock with an adjoining section disposed in a plane below or in the same horizontal plane with the upper edge of the register-frame and opening.

Another Vobject of my invention is the provision ofV bot that is capabl'eof easy assembly with other sections of a hot-airv stack, of either double or single wall construction.

Still other objects are the provision of a boot that is constructed so that the interlocking member may be disposed in the manner stated, without altering` the dimensions of the register opening, and which at the same time is comparatively inexpensive to manufacture and does not add to the cost thereof. A v

I prefer to accomplish the divers objects of my invention by the means and in the manner hereinafter fully described and as more particularly pointed out in the accompanying drawings forming a part of this specification, wherein- Figure l is a perspective view of a double wall hot-air stack, showing my improved boot in position and about to be assembled therewith. Fig. 2 is a side elevation of the upper portion of my improved boot. Fig. 3 is an exaggerated section thereof, showing the manner of assembly with the upper stack or section.

n Referring to the drawings, A and B designate the upper and lower sections, respectively, of a hot-air stack and C is my improved boot that is adapted to be interposed between the same and interlock therewith so that the register opening in the boot will coincide with the register opening in the wall. The front wall 5 of the boot is preferably open or has a portion thereof cut away to provide a seat in which the registerframe is adapted to be mounted. The top or upper wall 6 extends a short distance to the rear of the front wall 5 and is then bent downwardly and inwardly at an abrupt angle thereto, to provide an inclined wall 7. The side wall 8 of the boot C is preferably cut or shaped in a manner to correspond with and fit the contour of the top wall, and from the lower end of the inclined wall 7 to the opposite or rear wall, said side wall 8 is preferably terminated on a horizontal plane and is suitably shaped, as at 9, to receive the outer member of the double wall upper section that may be mounted thereon. The inner, or what may be termed the rear wall l0 of the boot, extends a slight distance above the portion 9, and is provided with interlocking rib l1, whereby the inner wall of th'e upper section is secured or locked thereto; The'upper edge of this inner wall terminates in a plane horizontally alining with or in a place below the portion 6 of the top wall of the boot, and, in the event the boot is at the upper end of and terminates. the stack, a suitable metal cap 12, having down-turned interlocking side ianges 13, may be placed over the same, as shown in Fig. 2 of the drawings.

From the above it will be observed the upper or interlocking portion of the boot does not extend above the horizontal plane of the top wall of said boot, and when the boot is inserted through the register opening in the wall, there are no projections on the same that interfere with the free insertion thereof. At the same time the dimensions of the register opening in the boot are not reduced, and by the employment of the in clined wall 7 a clear, free flow of hot-air from the stack is secured.

I/Vhile I have herein illustrated and described certain specific means for carrying out my invention, it of course, will be obvious to others skilled in the art to which my invention pertains, that divers modifications and refinements thereof are possible without materially departing from the spirit of my invention. I therefore desire it understood that all such changes are contemplated within the scope of my invention as expressed in the appended claims.

What I claim is ll. A double-wall hot-air stack consisting of a plurality of sections having connected inner and outer walls, said sections adapted to fit together end to end by both the inner and outer walls, and a double wall section adapted to interlock respectively with an upper and a lower section and having its upper interlocking portion disposed in or below the plane of the top of the vertical front walls thereof.

2. A boot for hot air stacks comprising a V'four walled structure, a portion of one of said walls being cut away to provide a register opening and means on the top of said boot whereby the same is adapted to be interlocked with a superimposed stack section, said means being disposed in a plane at or below the horizontal plane of the upper edge of the cut away wall.

3. A register boot for hot-air stacks con1- prising a four-walled structure, a portion of one of the vertical walls thereof is cut away to provide a register opening, a top wall therefor consisting of a strip of metal bent upon itself and having a portion intermediate its ends bent substantially V-shape and extended down inside said boot.

et. A register boot for hot-air stacks comprising a four-walled structure, a portion of one of the vertical walls thereof being cut away to provide a register opening, a top wall therefor consisting of a strip of metal bent upon itself and the folded edge whereof is bent at substantially right angles which constitutes the upper edge of the register opening, the top being extended from said Vflange rearwardly and then downwardly and the layers of said top being then separated and formed into means for securing the interlocking of said boot with an adjacent stack section.

5. A register boot for hot-air stacks comprising a four-walled structure, a portion of one of the vertical walls thereof being cut away to provide a register opening, a top wall therefor consisting of a strip of metal bent upon itself and the forward portion thereof being horizontally disposed adjacent the front wall of the boot and its rear por-` tion vertically disposed with its upper'edge terminating in a plane at or below the horizoital plane of the front portion of said top wa 6. A register bootfor hot-air stacks com` prising a four-walled structure, a portion of one of the vertical walls thereof is cnt away to provide a register opening, a top wall therefor consisting of a strip of metal bent upon itself and the forward portionV thereof being horizontally disposedV adjacent the front wall of the boot and its rear portion vertically disposed with its upper edge ter-v ALBERT o. sonnerie.

Vitnesses V WM. HAROLD EICHELMAN, E. K. LUNDY, Jr.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

